Whistling clutch?

iaind

iaind

iaind

Soldato
Joined
26 Feb 2009
Posts
14,817
Location
Exeter
Got an odd problem with the car that I was hoping someone around here might be able to shed some light on.

Its a 2004 Mondeo TDCI 2.0 with 48k miles on it, it seems that when it's cold and the clutch pedal is pressed, I get a very high pitched whistling noise. I originally though it was the heater blower, its very quiet and seems to come from in the cabin (although it probably isnt!). Once it's warmed up it doesnt seem to happen.

Clutch feels positive and everything works as it should - any ideas what the noise is?
 
Could be the master or slave cylinder on the clutch making a bit of noise?

Really something very hard to diagnose, mostly impossible over the internet.
 
i'd be more inclined to say it's the master clutch cylinder than the slave, as it's normally much closer to you than the slave. How longs it been since the hydraulic fluid was changed?

B@
 
It sorted out a "loose" clutch for me, i think it was the slave cylinder "not letting go". It didn't cost more than £50 for someone else to do. Dunno if it'll help, but it might

B@
 
iaind said:
Only when its running and idling
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Sounds more likely to be the bearing than the hydraulics then as with the engine off the bearing wouldn't be spinning so you'll get no noise. The hydraulics will behave in the same way whether the engine is running or not.

Could also possibly be an air leak somewhere which is only audible under the specific speed and load conditions although that's less likely.

Try popping the bonnet and having a listen whilst someone else presses the clutch to see if you can hear it better or tell where it's coming from.
 
kaiowas said:
Sounds more likely to be the bearing than the hydraulics then as with the engine off the bearing wouldn't be spinning so you'll get no noise. The hydraulics will behave in the same way whether the engine is running or not.

Could also possibly be an air leak somewhere which is only audible under the specific speed and load conditions although that's less likely.

Try popping the bonnet and having a listen whilst someone else presses the clutch to see if you can hear it better or tell where it's coming from.
Click to expand...

Will have a look, although despite being fairly mechanically minded, clutches and gearboxes are still witchcraft as far as I'm concerned.

Presumably if it wants a release bearing, its worth replacing the clutch, even at this mileage?

Given the tendancy of these engines to need flywheel replacements, would it be sensible to go whole hog and replace that too?
 
When the time comes I'd probably replace clutch and flywheel however if it's only a slight noise under the conditions you mention i'd personally ignore it for now and wait to see if it gets worse.
 
kaiowas said:
When the time comes I'd probably replace clutch and flywheel however if it's only a slight noise under the conditions you mention i'd personally ignore it for now and wait to see if it gets worse.
Click to expand...

Yes I appreciate I'm being a bit presumptuous! It did have a service a week ago so has new oil, I wonder if that might affect it somehow
 
Well the noise is getting worse and after doing some research I think its the dreaded TDCi dual mass flywheel failure.

Is £647 a good price for a new clutch and flywheel fitted and guaranteed for a year?
 
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